Shock-absorber.



O. W. CRAWFORD.

SHOCK ABSORBER APPLICATION FILED MAY 4, 1911.

Patented Apr. 29, 1913.

, UNITED STATES FATENT GFFIQE,

CARY W. CRAWFORD,- OF LOS ANGELES, CALIFORNIA, ASSIGNOR TO EUREKA SHOCK ABSORBER, COMPANY, OF LOS ANGELES, CALIFORNIA, A CORPORATION OF CALL FORNLA.

SHOCK-ABSORBER.

Specification of Letters Batent.

Application filed May 4, 1911; Serial No. 624,922.

To all whom it may concern:

Be it known that I, CARY W. CRAWFORD, a citizen of the United States, residing at the city of Los Angeles, county of Los Angeles,'State of California, have invented new and useful Improvements in Shock-Absorbers, of which the following is a specification.

My invention relates to a shock absorber for that class of v the load carrying body is supported by springs carried by the running gear, and the object is to prevent an objectionable recoil when such vehicle passes over an obstruction or int0 a rut; 'I accomplish this object by the device described herein and illustrated in the accompanying drawings, in which:

Figure 1 is side elevation of my shock absorber; Fig. 2 is a top plan of the parts shown in Fig. 1; Fig. 3 is a sectional detail on the line 3-3 of Fig. 1.

In the drawings 5 is a U-shaped body having side Wings 6 which is secured upon the axle 7 of the vehicle in the place of the ordinary springs thereof, and may be termed the axle frame. In the body are the T- shaped vertical guide ways 8, in which are slidably mounted the leg members S) of the spring frame 10, to which are secured the ordinary vehicle springs 11. The body and spring frame are preferably of cast steel. Oil cups 12 are provided to lubricate the legs of the spring frame in their movement through the body.

In the spring frame are screwed a plurality of bolts 13, which pass through holes in the wings of the axle frame. After these bolts are screwed into. place, cotter pins 14 hold them against accidental disengagement. Mounted on these bolts, between the spring frame and axlcframe, are the shock springs-l5. Between the heads H) of the bolts and the axle frame are mounted rebound springs 17, which prevent an excessive action of the main springs when thevehicle passes over an obstrl'u-lion.

heeled vehicles in which It -willbe understood that the shock and. rebound springs are compressed slightly when positioned for use and that the number of such springs depends upon the strength thereof and the character the vehicle, whether light or heavy. I pre fer a considerable number rather than a smaller number of greater strength, as a more mobile shock absorber is thereby provided.

Having described my invention, what I claim is: 1

1. A shock absorber, comprising an axle frame having vertica openings therethrough when positioned for use and a spring frame having legs, said legs being movable through the vertical openings in the axle frame, shock springs between said frames and rebound springs below the axle frame; and bolts passing through the springs and axle frame and secured to the spring frame; and means to secure said axle frame upon the axle.

2. The combination, in an apparatus for tween the body and the running gear of wheeledvehicles of a. spring frame having T-shaped legs; an axle frame comprising a U-shaped body having side wings, said body having T-shaped vertical guide ways therein, said m'ings having vertical holes the rethrougli; bolts passing wings and into and secured to said spring frame, said bolts having heads below' said wings; rebound springs on said bolts between the heads thereof and the wings, shock sprin s on said bolts between said wings and t e spring said axle frame upon the axle.

In witness that I claim the foregoing I have hereunto subscribed my name this 29th day of April, 1911.'

CARY W. CRAWFORD Witnesses:

JOHN M. Nu'rr, G. L. CLARK.

counteracting or cushioning vibrations bethrough said I frame; and means to secure 

